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Flow stress curves of USIBOR1500 high-strength steel at high temperatures were obtained by tensile test. A constitutive model of high-temperature deformation of the material was established at 300–600 °C and 500–800 °C for one- and two-stage hot-forming processes, respectively. On the basis of the established constitutive equation, the one- and two-stage hot-forming methods were simulated, and the...
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